Container closure lining machine



April 1938 w. 1. MCGOWAYN 5-i- AL 2,114,309

CONTAINER CLOSURE LINING MACHINE Filed Nov. 7, 1935 2 Sheets-Sheet 1 April 9., 1938. w. MCGOWAN El AL 2,114,309

CONTAINER CLOSURE LINING MACHINE Filed Nov. 7, 1935 2 Sheets-Sheet 2 w o f -f UNITED STATES PATENT OFFICE.

CONTAINER oLosUl'm LINING MACHINE William I. McGowan and Albert-J. Puschin, Cambridge, Mass.

Application November '1, 1935, Serial No. 48,676

' 6 Claims. (01. 113-80? gaskets are quite expensive and are diificult to This invention relates to container closures and particularly to apparatus and means to apply large quantities of viscous sealing compound to.

hold in place. Tube gaskets are even more troublesome since a small pin must be fitted into the open ends before a ring can be formed, and a gap in the gasket always remains When, however, such covers have been lined? with can sealing compound on lining machines it has proved very diflicult to apply enough com-.- pound to form the gasket without either leaving a gap at the ends of the stream or forming a bump in the gasket due to the overlapping of the ends of the stream of compound.

It is an object of this invention to provide Figure 8 is a sectional view through the cover on line 8-8 of Figure 6.

In the following description, the term "endi' is used to designate both the cover and the bottom of containers, in conformity with trade termounted upon table I. A rotatable disk or chuck l is mounted in a circular opening formed in the horizontal table i and is driven by suitable gearing from a power shaft 8, see Figure 2. The ends to be lined are placed upon and rotated by the chuck 1.

The arrangement for driving the chuck I from the shaft 8 is shown in Figure 2 and consists of two bevel gears la and 8b which drive a stub shaft on which is mounted spur gear 80 which in turn meshes with pinion gear 8d secured to the shaft 9 on which the chuck I is mounted. The

shaft 9 is journaled in a yoke member 9a mounted below the table I, and provision is made for and I9 which act through rocker arms and 2|, pull rods 22 and 23, and wire connections 22a and 23a to-open the valves in nozzles II and II. ,.The raised surfaces on the cams l8 and I9- means to apply large quantities of viscous shifting the shaft 9 axially to raise the chuck 1 2 pound t large container covers or ends; t apply above the surface of the table I. The-gear 811 is th compound t any size container end in such made wider than the gear 80 in order to maina, -11 3, gaps or bumps are formed; tain proper meshing, relation between these two 25 t speed the lining operation and t reduce t gears when the chuck is elevated. A second yoke 25 cost of lining large covers. These and other obbracket Supported from Yoke Supports j t 111 become apparent as t specific tio rocker arm III which serves to raise and lower progeedg the chuck i, and this rocker arm is operated from i This application contains subject matter disuitable cam through the push rod B vided out of our copending application Serial No. Figure i p 755,242 m d November 23 93 and. a Two valvednozzles'lland l2 are mounted upon tinuation in part of our earlier filed application. adjustable brackets and and are located 7 A preferred embodiment of our invention is 11- above the plane of rotation of theflhllck 1 and lustrated in the accompanying drawings, in diametrically d Points with respect to which: i y the axis of rotation of the chuck. The nozzles 35 Figure 11 a pefspgcflve View Showing the b l I and I2 are supplied with viscous sealing compart ofth 1m machine; pound under pressure through hose connections .Flgure 2 1 a fragmentar View in elevation I la and l2a, the valves in the nozzles being norv. lustrating the construction of the lower part, of mally closed to permit discharge of the com- 40 t machine; gounLtA camt sclllaft litisbiultablyijigugnaled in 40 n 3 rac e s moun e' upon a e an riven n he '3 of i fgw taken timed relation with power shaft 0 by a chain It a Figure 4 is an enlarged sectional View showing acting through a' clutch ll mounted at the end the construction of the chuck pad: 8 3 i i g g g figure y e pe a a, gure opera g roug after g ig l gg g g fii zgfigag rod I 'Ib and suitable levers, and the clutch is of we 6 shows a Sector of the cover or u such construction that a momentary depression after the heating operatic s 17 and release of the pedal l'la causes the clutch to ngur 7 Show engage-and rotate the cam shaft I5 one complete s a small portion of our improved revolution and then disengage 60 m1, and The cam shaft l5 carries two identical cams laare designed with respect to the speed of rotation of the chuck I so'the valves are maintained open for only one complete revolution of the chuck.

' The cam shaft l5 also carries a cam 24 which acts through a rocker arm 25 to operate the chuck pad 26 located immediately above the axis of rotation of the disk 7. A fourth cam 21 acts through a suitable follower and push rod Illa to raise and lower the chuck I during its operation. The arrangement permitting the chuck to be raised and lowered during rotation has been described above in connection with Figures 2 and 3.

The chuck pad 26 is provided with a compressible link section between the rocker arm '25 and the lower end of the pad, the details of which are illustrated in Figure 4. The chuck pad is slideably supported in a member having a hollow upper section 28a and a lower stem section 28b extending through the table 4. The upper part 26a. of the pad 26 is provided with a cage section 261) mounted in the hollow support 280, and the upper end of the rod 26 passes through the lower end of the cage 26b and is secured to inner race of a ballbearing 2B which is' freely slideable within the cage 26b. A spring 30 is located within the cage 26?) and serves to force the two sections upon the chuck I in inverted position.

of the chuck pad apart, while permitting the lower stem section of the pad to be moved upwardly against the action of the spring without moving the rocker arm 25. The construction described is like that shown in U. S. patent to Dewey 1,748,914, but other constructions of compressible section may be employed if desired.

Operation of the machine is as follows: The normal position of the various elements of the machine is shown in Figure 1, and it will be seen that the'chuck I is normally in its lowered position flush with the surface of the table I, and

the chuck pad 26 is in raised position. When it is desired to .line a closure end, the end is placed The treadle [1a is then operated momentarily which causes an engagement of the clutch l1, thus setting into operation the cam shaft IS. The cam 24 first causes the chuck pad 26 to descend and clamp the end against the chuck I, then the cam 21 operates to raise the chuck 1 while it isrotating into a position to receive compound from the nozzles II and I2, then cams l8 and I9 simultaneously open the nozzles II and I2 for only one complete revolution of the chuck I, and, during the remaining part of the revolution of the cam shaft IS, the chuck I is lowered to its normal position.-

, Figure 5 shows one manner in which the two streams of compound may be applied to an end. As shown in this figure and in Figure 8, the end is provided with a gasket channel bounded on one side by the outer lip 3| and on the other side by the wall 32. When the gasket channel is wide, as

in the case of a pail end, the adjustment of the nozzles .II and I2 is such that either one, say for example, I 2, delivers compound close to the lip 3|, while nozzle H is adjusted to deliver compound closely adjacent the wall 32. If the rotation of the chuck is in the direction shown by the arrow in Figure 5, two streams of sealing com- "pound will be deposited in the channel forming 33a and ends at the point 33b in abutting relation to the beginning end. Similarly,the ring 34 begins "compound almost immediately merge into a single viscous mass as shown in Figure 6, the margins between the rings and the abutting terminior joints in the rings fading away. By thus forming the gasket of a plurality of rings of sealing compound With the ring joints or termini displaced from each other, a uniform gasket is obtained without the necessity for overlapping the mate-v rial at any point. I

In case the gasket channel is narrow, the sideby-side arrangement of the delivered streams is not necessary, but one stream may overlie the other.-

The nature of the sealing compound is not important, but for large containers we prefer to use a special compound disclosed in our copending application Serial No. 14,796, filed April 5, 1935, consisting essentially of a water dispersion of latex containing a film forming agent and an accelerator.

After the lining operation, the ends are immediately placed in an oven and held at a temperature of 200 to 230 F. from two to three hours. As the heat is first applied, a tough film quickly forms on the exposed surface of the gasket, and, as the water is vaporized in the interior of the compound, the steam presses out- Wardly against the film and expands the gasket. The cross-section of the gasket illustrated in Figure? shows a spongy structure assumed by the gasket when the compound is heated from 200 to 220 F. Figure 8 illustrates a section of the gasket in position in the channel of the end.

face of the gasket is smooth, continuous and quite glassy inappearance. The compound is of such nature that the rubber cures in the temperature range given and during the time indicated.

The utility of our machine is not limited necessarily to the application of large bodies of viscous compound but finds general application wherever it is desired to avoid laps or joints in the application of can sealing compound, and while we have set forth the principle of our invention and illustrated a preferred embodiment thereof, it is obvious to one skilled in the art that various modifications may be made without departing from the spirit of the invention.

What we claim is:

1. In a lining machine, means to rotate an end, a plurality of nozzles arranged to deposit in the channel of said end a plurality of contiguous rings of lining compound, said nozzles being spaced apart along the channel of said end, and means operated in synchronism with the rotation of said chuck to cause discharge of compound from each of said nozzles for one complete revolution only of said chuck, the discharges from said nozzles being in such timed relation that the termini of said deposited rings are displaced from each other along said channel. I

2. In a lining machine, a rotatable chuck adapted to turn an end, a compound delivery nozzle arranged 'to deposit a ring of compound in the channel of said end, a second nozzle arranged to deposit in said channel a second ring of compound contiguous with the first ring, said second nozzle being spaced from said first nozzle along ancsoo said channel, valves for controlling-the flow of compound from said nozzles, and means to cause the simultaneous opening of said valves for one complete revolution of said chuck and thereupon simultaneously close said valves.

3. In a lining machine, a rotatable chuck adapted to turn an end, a compound delivery nozzle arranged to deposit a ring of compound in the channel of said end, a second nozzle arranged to deposit in said channel a second ring of compound contiguous with the first ring, valves for controlling the flow of compound from said nozzles, means for rotating said chuck, and means operated in synchronism with the rotation or said chuck ioropening each of said valves for one complete revolution oi said chuck and thereupon closing each valve and for controlling said valves in timed relation so that the termini or joints in said rings are displaced from each other,

along the channel of said end.

4. In a lining machine, a discsupported for rotation in'a horizontal plane, a nozzle arranged above the plane of the disc and displaced from the axis of rotation thereof, a second nozzle arranged above the plane of the disc at a point substantially diametrically opposite the first nozzle, means for supplying lining compound to said nozzles, means :to rotate said disc, and means for causing said nozzles to simultaneoraly discharge Patent No. 2,111,309.

. (se v WILLIAM I. mccowAu, ET AL.'

lining compound during one complete revolution only of said disc.

5. In a lining machine, a disc supported for rotation in a horizontal plane, a nozzle arranged above the plane of the disc and displaced from the axis of rotation thereof, a second nozzle arranged above the plane of the disc at a point substantially diametrically opposite the first nozzle but at a diil'erent radial distance from the axis of rotation of said disc, means for supplying lining compound to said nozzles, means to rotate said disc, and means for causing said nozzles to simultaneously discharge lining compound during one complete revolution of said disc.

6. In a lining machine, a disc supported for rotation in a horizontal plane, a nozzle arranged above the plane of the disc and displaced from the axis of rotation thereof, a second nozzle arranged above the plane of the disc at a point substantially diametrically opposite the first nozzle, means for supplying lining compound to said nozzles including a pair of normally closed valves, a power shaft for rotating said disc, a cam shaft driven from said power shaft, and means including cams on said cam shaft for simultaneously opening and maintaining open said valves during one complete revolution of said disc and then closing said valves.

WILLIAM I, McGOWAN. ALBERT J. PUBCHIN.

CERTIFICATE OF CORRECTION,

.April 19,1958.

It is herebyv certified that error appears in the printed specification of the above numbered patent requiringeorrecti on as follows: Page 1, second .column, line 59, for the word "permit" read prevent; and that the said Letters Patent should be read with this correction therein that tin same may conform to the record of thcase in .the Patent Office;

Signed and'sealed this Zhth day. of May, A. D. 1938; 7

Henry Van Arsdale, Acting Commissioner of Patents.

' ancsoo said channel, valves for controlling-the flow of compound from said nozzles, and means to cause the simultaneous opening of said valves for one complete revolution of said chuck and thereupon simultaneously close said valves.

3. In a lining machine, a rotatable chuck adapted to turn an end, a compound delivery nozzle arranged to deposit a ring of compound in the channel of said end, a second nozzle arranged to deposit in said channel a second ring of compound contiguous with the first ring, valves for controlling the flow of compound from said nozzles, means for rotating said chuck, and means operated in synchronism with the rotation or said chuck ioropening each of said valves for one complete revolution oi said chuck and thereupon closing each valve and for controlling said valves in timed relation so that the termini or joints in said rings are displaced from each other,

along the channel of said end.

4. In a lining machine, a discsupported for rotation in'a horizontal plane, a nozzle arranged above the plane of the disc and displaced from the axis of rotation thereof, a second nozzle arranged above the plane of the disc at a point substantially diametrically opposite the first nozzle, means for supplying lining compound to said nozzles, means :to rotate said disc, and means for causing said nozzles to simultaneoraly discharge Patent No. 2,111,309.

. (se v WILLIAM I. mccowAu, ET AL.'

lining compound during one complete revolution only of said disc.

5. In a lining machine, a disc supported for rotation in a horizontal plane, a nozzle arranged above the plane of the disc and displaced from the axis of rotation thereof, a second nozzle arranged above the plane of the disc at a point substantially diametrically opposite the first nozzle but at a diil'erent radial distance from the axis of rotation of said disc, means for supplying lining compound to said nozzles, means to rotate said disc, and means for causing said nozzles to simultaneously discharge lining compound during one complete revolution of said disc.

6. In a lining machine, a disc supported for rotation in a horizontal plane, a nozzle arranged above the plane of the disc and displaced from the axis of rotation thereof, a second nozzle arranged above the plane of the disc at a point substantially diametrically opposite the first nozzle, means for supplying lining compound to said nozzles including a pair of normally closed valves, a power shaft for rotating said disc, a cam shaft driven from said power shaft, and means including cams on said cam shaft for simultaneously opening and maintaining open said valves during one complete revolution of said disc and then closing said valves.

WILLIAM I, McGOWAN. ALBERT J. PUBCHIN.

CERTIFICATE OF CORRECTION,

.April 19,1958.

It is herebyv certified that error appears in the printed specification of the above numbered patent requiringeorrecti on as follows: Page 1, second .column, line 59, for the word "permit" read prevent; and that the said Letters Patent should be read with this correction therein that tin same may conform to the record of thcase in .the Patent Office;

Signed and'sealed this Zhth day. of May, A. D. 1938; 7

Henry Van Arsdale, Acting Commissioner of Patents. 

